Synchronous pulleysT2.5, T5, T10, T20,3M, 5M, 8M, 14M,MXL, XL, L, H, XH, XXH,S2M, S3M, S4.5M, S5M, S8M, S14MDec 18, 2012
... , S3M, S4.5M, S5M, S8M, S14M) The British System: MXL, XL, L, H, XH, XXH Material: 1045 Carbon Steel, Aluminium alloy ... . Surface treatment: Black oxidizing, phosphating, anodize, zinc-plating Tolerance: Conform to standards on our website or customers' requirement OEM/ODM service ...